The Money 20/20 Hackathon had 50% of the 104 participating developers submit projects built on Bitcoin APIs like Blockchain's who helped sponsor the event along with old school players like PayPal, Mastercard, and Inuit.

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BitPredict captured a $20,000 grand prize; the application was developed by two students from Texas A&M.
This application manages bitcoin volatility with statistics that uses data from Blockchain.info. These statistics are used in conjunction with Google’s prediction engine to create a 90-95% accurate prize prediction of Bitcoin. A user is able to send and receive with the Blockchain API and set a risk level, which will automatically adjust the account balance of bitcoin and USD depending on the risk level.